What exactly do you mean by ” -0,65 ”? Does it say -0,65 in the BIOS or did you go down 0,65V in the BIOS?
What you need to keep in mind with the Aida64 test is that your CPU WILL get hot, it’s supposed to.
That test is an extreme test for the CPU, it’s basically pushing your CPU balls to the walls, 100%. There’s no workload out there like this test. This test is basically the absolute worst case scenario for your CPU.
So it’s normal for your CPU to get high temps during this test - they are supposed to.
What this test essentially does is that it puts the absolute worst load you can think off on your CPU. It does this to test your CPU, in order to make sure your system is stable due to you have undervolted.
Since if it’s not stable, the last thing you want during a game or so, is for your PC to crash because of it. Now don’t worry if this happens, it’s nothing dangerous or won’t damage your PC.
This is why we stress test
Also during your test, check these boxes:
Stress CPU, Cache and FPU.
This ensures your CPU are pegged, this is a workload that will literally put your CPU to it’s knees.
And don’t worry about the AIO, it takes time for water to heat up and will take time for your AIO to heat up and reach equilibrium (ie, the max temperature the test is making your CPU to reach).
The reason why one tube is hotter than the other is because that is where the warm water is running from the CPU, ie has cooled it and then goes through the rad where it gets cooled down by the fan on the radiator and then goes back, cooled, in the other colder tube and back to the CPU to cool it again.
This is how every water cooling loop works and the water flows fast in the loop.
I’d also recommend using these programs to monitor everything;
HardwareInfo - Be sure to keep an eye out on the CPU Package - This is the overall temp of your CPU during the test.
Also in this software, take a picture of the ”VCore”, this is the Voltage your CPU is running at and will give me a more accurate reading of what your voltage is. Rather than your ” -0.65”.
This is off the top of my head, I’ll later on today look deeper into my own PC and what softwares, settings etc I used for my test. And get back to your for a better testing overall.